Duplex heating system.



Patteduune s, 1909.

l 2 SHEETS-SHEET 1.

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APPLICATION FILED JULY 20, 1907.

923,968. Patented June 8, 1909.

'z SHEETS-SHEET 2.

in thecounty of Cook and 'have invented certain new and useful lm- UNITED smsjes rxr-ENT (nun-ola.y

EGBERT H. GOLD, OF CHICAGO, .ILLINOIS DUPLEX HEATING- SYSTEM.

N o. 923,968. Specification of Letters Patent.

Patented June 8,1909.

lApplication filed July 20, 1907. Serial No. 384,804.

To all whom it may concern:

Beit known that- I, EGBERT Gom), a citizen ofthe United States, residing at Chicago, State of Illinois,

ed for ust` in the heating of railroad cars where all of the cars of a train will be normally supplied with a heating medium, such as steam, from a train pipe leading from a primary generator, such as the locomotive boiler, while individual ears will be provided with auxiliarygeneratorswhich .will ordinarily be used eitherwhen, for some reason,

the primary generator cannot be relied upon or when the car is detached from the locomotive or other primar generator, and my invention is still 'furl' 1er especially useful in connection with that type of car heatingr systems in which the ears areinormally supplied with higli-pressure steam from the train pipe and are provided With a thermostatically operated device whereby the steam in the radilat ing pipes in the car isautomatically lmaintained at a. low pressure, lusually about atmospheric pressure, 'or what is commonly known as the Vapor system of canheating'.

Broadly, the object of my invention is to provide any such systems with a simply constructed and a readily and reliably operated auxiliary heater which shall automatically supply the radiating systen'l with a heating n'lcdiunl, preteral'ily steam, at low pressure.

lispeciallyis it my plan .to provide indi- More particularly, my invention is intend-` yidual cars with 'a radiating system not?,

mally supplied with the heating median] 'from the train pipe-aud provided with an auxiliary generator' on each ear which tinay be readily connected with the radiating system .so as to'supply-a heating medium thereto at low pressure and which shall'bc automatically controlled and operated.

More particularly, it is the purpose ot-my invention to provide such an auxiliary heater for the vapor system of heating so that 1t shall be possible to eliminate the system of lwater pipes filled with waterand used with emergency heaters ot' the .so-called Baker heater type, which are so commonly 1n use as auxiliary heaters. and to make it possible to obviate all the difficulties, dangers, expense and discomforts which are attendant upon such water heating systems, such, for example, as the danger of freezing, the danger o't explosions, the necessity for an intensely hot,

tire, the expense otlleavy piping and fittings, the slow operation in l'1eatin g,l the equally slow operation in cooling after the water in the pipes has become thoroughly heated, ete., and to substitute therefor a low pressure generator which may be quickly set in operation with a low fire, lwhich will rapidly lill the lradiating pipes with steam at low pressure,

which will only require light and inexpensiye fittings and pipes, whichwill be alltomatically maintained at low pressure, insuring a minimum consumption oflt'uel and a maximum of comfort, and which will permit of the rapid cooling of the ear, ete.

AXnother object' of my invention is to provide means for autoimttically supplying such auxiliary generator with water.

It is a subsidiary purpose of my invention to make the installation of sut-h a system relatively easy and inexpensive. l', therefore, aim to utilize, so far as possible, the ordinary heater, when one is already installed, and alsothe air and water supplies which o rdinarily are found in cars ot' this sort.

I shall illustrate the present invention in connection with and as a nualilieation and improvement upon my low-pressure system of heating railway cars which is set outin my Patent No. 758,436 ot .April 26, 1904 and in subsequent patents embodying improvements and modificationsupon my original system. I n a heating system pt 'that character steam is conveyed at, high pressure through"- a steam train pipe ru'n` ning thele'ngth otlth'e train and introduced `Into the several radiating"systems m the `cars at reduced pressure, the pressure and temperature in thea-adiating pipes being maintained by automatlc means.

rlhe invention has for further obJects the 'parts in the several other new and improved constructions and arrangements set out in the accompanying specification.

These and such other objects as may hereafter appear are accomplished by my inventon, a convenient embodiment of which is shown in the accompanying drawings, in Wli1ch- Figure 1 isa diagrammatic view in perspective of a heating system as applied to a car. Fig-2 is a vertical section through the controller or vapor regulator. Fi 3 is a sectional elevation of the .Water eed regulator, and Fig. 4 is asimilar-view of the damper regulator.

Like characters of reference indicate like pressed air trainrpipe, K the air tank and K the auxiliary air tank which supplies pressure to the water tank in the customary manner. A

The' steam from the primary-'source of supply, or from the train pipe C passes up through a pipe 1 and valve 2 and into'a pipe 3 which leads topa casing 4 in which is formed an inlet chamber 5 and .an outlet chamber 6 connected by a port 7 closed by valve 8 on a spindle 9.

K fluid; From this diaphragm extends a rod` B. When the va 10 is a pipe leading from the outlet chamber to the system of radiating pipes ve 8 is raised the steam will pass freely from pipe 3 into pipe l() and into the radiating system.

11 is a return pi e from the radiatin system which is pre .erably made to extent around the Water tank H so as to keep the water from'freezingand which terminates at the drip pipe 12,-in which is a thermo* stat 13 of any desired construction, here shown'as a diaphragm inclosing a volatile 14 to which is connected a lever 15 pivoted at 16 and connected at the other end With valve stem 9. The steam in passing through the radiating pipes forces the cold air and Water of condensation out through pipe 11 and pastfthe thermostat in drip pipe 12. When the system is filled with steam at suiiiciently high temperature, the steam coming into contact with the thermostat causes the same to rock the lever 15 andclose Valve 8, shutting olf the supply of steam to the radiating ipes, the Valve 8 remaining closed unti there has been suliicient conigures ofthe drawings.

densation in the radiating pipes to cause the cooling and contraction of the thermostat 13, when valve 8 will again be opened. In practice, however, it is found that valve 8 remains open most of the time sufiicient to admit enough steam to keep up a proper pressure and temperature in the radiating pipes.

I have described iii the above paragra h one form of controlling means whereby steam at high pressure is introduced into and maintained in the radiating system at relatively low pressure, but it will be apparent 'that other apparatus to accomplish the same end or other methods of low-pressureheating might be utilized in connection with the other elements of my present iiivention;

When steam from the locomotive is not available, l utilize steaingenerator E for supplying thc heating medium. lhave shown this generator as consisting of the -shell 17 of an ordinary Pullman carstyle of heater, in the fire-box of which l arrange a boiler 18 which is in effect a Water jacket. The steam generated in the boiler passes out through'a pipe 19 which is provided with a valve Q0 and which connects with pipe 3 leading into the casing Ll. The. pipe 19 is preferably provided near its connection with pipe 3 with a valve 21. The steam from the generator will, therefore, follow the same course as steam from the train pipe through the inlet and outlet chambers of the casing and into the radiating pipes, whence it will pass through return pipe 11 and expand thermostat 13 so as to close the admission valve when the temperature in the radiating pipes' has reached the proper point. When 'valve 8 is closed or partially closed, pressure yvill begin to accumulate in pipe 1) and, in

order to safeguard the generator and make it automatic in its operation, this pressure is utilized to closea damper and slow down the fire in the generator. So, also, the accumnlation of pressure between thc controlling device d and the generator would. tend if unchecked to force back the Water in the generator and raise the level of the water in the float tank 33, thereby closing the valve in said tank. :is hereinafter explained. 'i

Q2 is a pipe on which the .safety valve PipeQ-i leads from the safety valve pipe Q2 and connects with the diaphragm casing 25, in which is a diaphragm QG carrying a rod :27 connecting with a lover Q8 pivoted at Q9 and carrying a weight 30. The damper 31 is connected to the other end of lever 28 by a chain or cord S2.

lVhen pressure rises in the generator, diaphragm :2G is expanded and rocks lever Q8, closing the damper. Another form of automaticcontrolling means for the damper might be used, this particular form of ap- 34 and with the water tank H by pipe 3 6,

the entrance of which is closed by a valve 37.' This valve has a stem 3S connected with a lever 39 pivoted within the tank, the

other end of the lever carrying a float l0.Y

The auxiliary air tank K is kept supplied with art'rom the air tank K used for the air brakes, these tanks beingg connected by pipe 4l, in which is the check valve 42. Auxiliary tank K is connected with thel water tank by a pipe 43 havingl a pressure reducing 'alve 44. The water in tank H will, therefore, be. forced into the boiler of the generator whenever valve 3l" is raised. The position ot' valve f-l'( will depend. of course, upon, the level of water in the' float chamber. Any forni ot' automatic means for opening valve 37 might be utilized.

lt will be seen thatso lonp; as the car is connected with the train it will be heated by steam taken from the locomotive or other source oiLl supply common Ato the other cars ot' the train` the temperature an'd pressure in the radiatingl pipes being automatically regulated. l" or the greater part of the time the car will be so heated. But in case it becomes necessary to cut the car out of the train, the auxiliary steam generator may be connected with the system by opening valve 2l. valve 2 being' closed to prevent escape of steam through the train pipe. When so connected the same system ol automatically lregulated low-pressure heating will be continued which ditions.

l do not here claim inea-iis for feeding water Jfrom the water tank to the generator through the agency pf compressed air, either broadly or substantiallyl as here shown, but reserve the right toclaim sucli subject inattcr, orso unich thereof as may be patentable, in my co-pending application Serial No. $7,550, tiled4 August 7, 1907, restrict-ing the present application in this regard to the deivices for feeding `water to 4the geiierator. in combination with the means herein shown for controlling the operations of the ,eenerator iii accordance with pressure conditions in the radiating )i )esand connect-hw i t. b

1. The combination with a radiating,l systcni, ot' means r'or supplying a heating medium thereto, tliermostatically operated means Jfor controlling the flow ot said heatingY medium through said system, an aux' iliary device t'or supplying a heating in'ei adaptedv to prevails uiiider normal con'-l diiun to said system, and'means adapted to be set in operation by the condition of the` L. The combination with a radiating sys-l tem. ot' a primary source of supply for supplying a heating medium thereto, a thermostatically operated device for controlling the'-v low of a heating mcdiuin through said sys,-

teni, means for disconnecting said primary.

source of supply from said radiating system, an auxiliary generator for generating a heating medium and supplying the saine to said radiating system when vsaid primary lsource of supply is disconnected, and .means for controlling' the operation of said generator, said means being arranged to be set in operation when said auxiliary generator is in `communication with said'radiatiiig system by the condition of the heating medium i in the radiatingl system whenever the operation of said tlieriiiostatic device has served to wholly or partially check the flow of the heating' medium through said system. n

n) 5). teni, of a source of supply of a heating niedinni normally connected with said system,

theif'mostaic means for controllingthe admis-- sion of a 'ieating medium from said source into the isy" tem, an 1 auxiliary generator )ze connected with said system, and means lcoperating with said' controlling means for controlling' the operation of said auxiliary generator. v

et. 'llieconibination with a radiating system, ot' a source of supply of a--heating ine-4 diinn normally connected. with said radiatiup` system, a valve in the connection between said source and said'system', a thermo- The combination with a radiating sysi static device to operate said valve, an auxiliary generator adapted to be connected with said systennand means, coperating with said valve, for automatically controlling the operation of the auxiliary generator.

5. The combination with a radiating system', of a source ot' supply of a heating inediuninorinally connected with said system, a valve 1n the connection between said source vand said system, a. device operated by thermostatic conditions at the outlet of said system to control the ,valve, an auxiliary gein" crater adapted tojlieconnected with said system, and means coperatmg with said -'z ilve' for controlling tlieoperation of the generator. y. v

(5."111@ com'biiiationjjwith a radiating syste'n having an inlet valveand a thermostatie device to control the same, of' a 'source of supply of steam and a steam generator adapted to-be connected alternately with the radiating system so that the flow, of steam.

'from either of the same is coiitrolledby the 4. i

inlet valveand means set inoperationf by the condition of the heating medium in said system for lcontrolling the operation of the generator.

7. The combination With a'radiating system, 'of a source of supply of steam normally connected Withsaid system, a controlling device'operated by thermostatic means to control the admission of steam from said source into the radiating system, an auxiliary steam generator adapted to be connected with said system through said controlling device, vand means operatedby changes of pressure in the heating system forl controlling the operation of said generator.

8. The Icombination with a radiating system, of a source of supply of steam. at high pressure normally connected with said system, thermostatically operated controlling means adapted to admit steam from said' source and maintain steam in said system at lower pressures, an auxiliary steam generator adapted to be connected with said system', and means cooperating With said controlling means for controlling the operation of the generator.

9. The combination with a radiating system, of a source of supply ofsteain at high pressure normally connected with said system, thermostatically operated controlling means adapted to admit steam from said source and maintain steam in said system' at' lower pressure, an auxiliaryI steariil 'generavw tor adapted to be connected with said system and to generate steam at relatively low pressure, and means' coperatiug with saidv controlling means for controlling the operation of the generator.

10. The combination With a radiating s stem, of a steam train pipe, a connection etween the train pipe and said system, a controlling device interposed in said connection thermostatic means for, operating the same,

a steam enerator adapted to beconnected with sai system-through said controlling device, and means for automatically. controlli'n the operation of the steam generator in con ormity with thermostatie conditions in said system.l

11. The combination with a radiating systcm, of a, steam train pipe, a connection between tlie train pipe and said system, a controlling device interposed'in said connection thcrmostatic means for operating the same, a steam generator adapted to be connected with said system through said controlling device, a controlling damper for the steam generator, and means set in operation by changes of pressure in said system :for opening and closing the damper.

12. The combination with'a radiating sys-` tem, of a steam train pipe, a connection from the train pipe to said system, a controlling device interposed in said,J connection thermostatic means for operating the saine, a

steam generator adapted to be connected with said system through said controlling device, automatic means for controlling the operationl of the generator, and automatic means for supplying the generator with Water.

13. The combination with a radiating system, of a source of supply of a heating medium normally connected with said system, thermostatic means for controllin the ad mission of a heating medium roin said source into the s stem, an auxiliary generator adapted to lie connected with Said radiating system, and means arran ed to be set in operation by the condition o4 the heating medium in said system, for controlling the operation of the auxiliary generator.

14. The combination with a radiating system, of a source of supply of a heating medium normally connected with' said system,

a controlling device operated by thermostatic means for controlling the admission of aA heating medium from said source into the system, an auxiliary generator adapted to be connected with the system through sa'id controlling device, andmeans set in operation by the condition ofthe heatingmediuinV in said system for controlling' the operation of the auxiliary steam generator.

15. The combinationwith a car, of a steam radiator located therein, a steam enerator located in said car and arrange to supply steam to said radiator, a water tank 1n communication with said generator so'as to supply water thereto, an air tank arranged to contain air under pressure and communicating with said water tank so as to force water from said water tank to said generator, a supply valve arranged to control the flow of water from the Water tank to the generator, and means automatically actuated by thermostatic conditions in said radiating system for determining the maximum pressure in the generator.

16. The combination with a radiating system, of means for supplying a heating nie- .dium thereto, automatic inealis for controlling the flow of the heating medium through said system, an auxiliary device for supplying a heating medium to said system, so that the saine is controlled by said automatic means, and means adapted to be set in o eration by the condition of the heating me ium in said system to control the operation of said auxiliary device.

17. The combination with a radiating system, of means for supplying a heating inedium thereto, automatic means for controllin the tlow of said heating medium through sai system, yan auxiliary heater for supplying a heating medium to said system, so as means adapted to be set in operation by the condition of the heating medium in'said system to control the operation of said' auxilvto be controlled by said automatic means,

medium in said system to control the opera- 10 plying Said auxiliary heater with and main tion of said heater, and an automatic device taining water therein at a given level. for supplying said heater with and main- 18. The combination with a radiating systaining water therein at a given level.

tem of va. heater for supplyin a heating 1 mediumto said system, automatc'means for @GEERT H' GOLD iary device, and an automatic device for supcontrolling the flow of said heatin medium Witnesses.: through said system, means adapte to be set I G. Y. SKXNNER,

in` ogeration by the condition of the heating H. L. PECK. 

